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In recent years, with digital maps and geographic information systems technology development and application of electronic maps came into being. With further development, many geographic information system applications will also be in the form of electronic map. Currently, the existing electronic map systems have achieved some results on research and application, but there are some issues leads to system can not play to their highest performance. How to design and develop scientific and efficient electronic map information system is a necessary requirement. In this paper, the design of data organization and functions are analyzed and studied to solve some practical problems. In some areas there will be of great practical significance.